How many composite numbers from 71 to 76 have the same number of divisors and how? Please explain. Thanks
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Now between 71 and 76 , we have 71, 72 , 73 , 74 , 75 , 76
From them 71 and 73 are prime.
72 = 2³ × 3²
74 = 2 × 37
75 = 3 × 5²
76 = 2² × 19
As the number of divisors/factors of 75 and 76 are equal, they have the same number of divisors.
From them 71 and 73 are prime.
72 = 2³ × 3²
74 = 2 × 37
75 = 3 × 5²
76 = 2² × 19
As the number of divisors/factors of 75 and 76 are equal, they have the same number of divisors.
srijagundam:
the statement makes no sense
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